+sub create_credit_note {
+ my (%params) = @_;
+
+ my $record_type = 'credit_note';
+ my $invoiceitems = delete $params{invoiceitems} // _create_two_items($record_type);
+ _check_items($invoiceitems, $record_type);
+
+ my $customer = delete $params{customer} // SL::Dev::CustomerVendor::create_customer(name => 'Testcustomer')->save;
+ die "illegal customer" unless defined $customer && ref($customer) eq 'SL::DB::Customer';
+
+ # adjust qty for credit note items
+ $_->qty( $_->qty * -1) foreach @{$invoiceitems};
+
+ my $invoice = SL::DB::Invoice->new(
+ invoice => 1,
+ type => 'credit_note',
+ customer_id => $customer->id,
+ taxzone_id => $customer->taxzone->id,
+ invnumber => delete $params{invnumber} // undef,
+ currency_id => $params{currency_id} // $::instance_conf->get_currency_id,
+ taxincluded => $params{taxincluded} // 0,
+ employee_id => $params{employee_id} // SL::DB::Manager::Employee->current->id,
+ salesman_id => $params{employee_id} // SL::DB::Manager::Employee->current->id,
+ transdate => $params{transdate} // DateTime->today_local->to_kivitendo,
+ payment_id => $params{payment_id} // undef,
+ gldate => DateTime->today,
+ invoiceitems => $invoiceitems,
+ );
+ $invoice->assign_attributes(%params) if %params;
+
+ $invoice->post;
+ return $invoice;
+}
+